Crank-shaft journal-box.



F. A. ROBERTS.

CRANK SHAFT JOURNAL BOX.

APPLICATION FILED JAN. 22, 1913.

Patented Nov. 17, 191 1 ZA Robe/Z8.

u mm THE NORRIS PETERS ca. PNOlD-LITHO-. WASHINGTDN, D.

S PATENT OFFICE.

CRANK-SHAFT JOURNAL-BOX.

Specification of Letters Patent.

Patented Nov. 17, 1914.

Application filed January 22, 1913. Serial No. 743,452.

To all whom it may concern Be it known that I, FREDERICK A. Ron- ERTS, citizen of the United States, residing at Dickey, in the county of Lamoure and State of North Dakota, have invented certain new and useful Improvements in Crank-Shaft Journal-Boxes, of which the following is a specification.

This invention relates to crank shaft journal boxes, and has as its object to provide a journal box for a crank shaft, which box will be so constructed as to effectually withstand the thrust of the crank shaft, and in which the packing may be readily removed without the necessity of dismounting the shaft.

A further object of the invention is to provide in a crank shaft journal box, a compartment containing the lubricantto be supplied to the shaft, and through which the shaft extends, and lubricant containing compartments located one at each end of the first mentioned compartment and each containing a packing device so constructed as to prevent leakage of lubricant from the lubricant containing compartments.

Still another object in view is to provide a journal box of the class mentioned which may be applied to the crank shaft at any point desired in the length of said shaft, without dismounting the same.

For a. full understanding of the invention reference is to be had to the following description and accompanying drawing, in which Figure 1 is atop plan view of the journal box embodying the present invention, the lid of the box being removed. Fig. 2 is a vertical transverse sectional view through the box and the shaft journaled therein, the view being taken in a plane passing through the lubricant containing compartment. Fig. 3 is a fragmentary end view of the box.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawing by the same reference characters.

In the drawing the bottom of the box is indicated by the numeral 1 and the side walls by the numeral 2, the end-walls being indicated at 3 and the lid at l. The bottom 1 is provided with the usual attaching flanges 5 by means of which the box may be secured upon any suitable support. The box is divided interiorly by partitions 6, into end and intermediate compartments indicated,

respectively by the numerals 7 and 8. The

bottom 1 and one side wall 2 are merged between the partition 6 so as to form a pillow block 9 having its. upper face located in an inclined plane at an angle of substantially 15. This face of the block is formed with a substantially semi-cylindrical concavity 10 to receive the crank shaft to be journaled, the said shaft being indicated at 11.

As shown in Fig. 3 of the drawing, the end-walls of the box are formed with re cesses 12 which extend downwardly and the walls of which at their lower ends are curved in the direction of that corner of the box in which the pillow block is located and indicated at 13, the wall of each recess at its lower end conforming to the contour of the shaft to be journaled. The lid at of the box is provided upon its under side at each end with a depending filler 14:, which when the lid is in place, projects into the respective recess 12 and substantially fills the same above the shaft 11. In a like manner, the partitions 6 are formed with recesses 15 and it will be observed from an inspection of Figs. 2 and 3 that the lower ends of the recesses 12 and 15 terminate in axial alinement with the concavity 10 in the pillowblock 9. A cap-plate 16 is disposed against the inclined face of the pillow block 9 in a manner shown in Figs. 1 and 2 and is secured in place by means of nuts 17 fitted upon threaded studs 18 projecting from the said face of the pillow block and through openings 19 in flanges 20 at the longitudinal edges of the plate 16.

Packing strips 21 are disposed against the inclined face of the pillow block 9 above and below the concavity 10 therein and between the said face of the block and the under faces of the flanges 20. It will be observed that the plate 16 is transversely concaved so as to fit the shaft 11.

It will be understood that by removing the lid 4 of the box, the nuts 17 securing the upper side of the cap-plate 16 may be readil removed and in order that the other nuts 1 may be removed from the respective studs 18, an opening 22 is formed in one of the side walls 2 of the box above in front of each of the nuts 17 last mentioned, and these openings are normally closed by means of plugs 23, it being understood that upon removal of the plugs a suitable wrench may be inserted for the purpose stated.

As before stated, a packing device is arranged within each of the compartments 7 and serves to prevent the leakage of lubricant from the compartments through the openings 12. Each of the packing devices includes a packing ring 24 which is split to fit about the crank-shaft 11 and which is surrounded by a band 25 having ears 26 through which a clamping screw 27 is fitted, thescrew being arranged to hold the band 25 firmly and snugly about the packing 241. This packing member is disposed against the inner side of the respective end-wall 3 and a washer 28 is disposed against the opposing face of the adjacent partition 6, a spring 29 being upon the shaft between the washer and the first described packing member.

:From the foregoing it will be apparent that a packing ring Q Land its clamping band 25, aswell as the spring 29 and the washer 28, the latter being split, and of the construction shown in my co-pending application Serial No. 722,354, filed September may be removed from the shaft or fitted thereon after the shaft has been received within the concavity in the pillow block 9. It will thus be apparent, that in order to apply the box to a crank shaft, it is unnecessary to dismount the shaft. It will be understood, of course, that lubricant is poured in the compartments 7 and serves to lubricate that portion of the shaft which seats in the pillow block.

Having thus described the invention what is claimed as new is In a journal bearing of the class described, a box divided by partitions into end compartments and an intermediate compart-, ment, the end compartments being designed to contain lubricant, the box being formed within the intermediate compartment with a pillow portion having an inclined face formed to receive the journal, a cap plate disposed against the said face, means securing the cap plate in place, the partitions being formed with inclined recesses opening at their upper edges and the end walls of the box being formed with similar recesses, and a cover for the box havingdepending filler portions projecting into the recesses in the said partitions and the said end walls of the box.

In testimony whereof I aflix my signature in presence of two witnesses.

FREDA. MAY, H. T. CHRIsT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, I). G. 

